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Codes Identifying Respiratory Disease
| Description | ICD-9-CM Diagnosis |
|---|---|
| Bronchitis, not specified as acute or chronic | 490 |
| Chronic bronchitis | 491 |
| Emphysema | 492 |
| Asthma | 493 |
| Bronchiectasis | 494 |
| Extrinsic allergic alveolitis | 495 |
| Chronic airway obstruction, not elsewhere classified | 496 |
Note: All associated sub-codes were also included
